Tweeness is not solely a matter of opinion, I would say there is probably an absolute and measurable way of looking at it. Fotherington-Thomas dancing among the flowers, or dolls with long skirts that act as loo-roll covers, or Mary O'Hara's singing, are surely twee in an absolute sense. Leadbelly's singing, on the other hand, is demonstrably un-twee. aa is Doc Watson's flat-picking. As to Cara Dillon, I couldnt say, I've never heard her, as far as I know.